Undervoltage release 208-230 V AC 50/60 Hz accessory for: 3VA1 and 3VA20-26 - 3VA9908-0BB25

Product Overview

The Siemens 3VA9908-0BB25 undervoltage release is an electrical accessory designed for specified compatible Siemens SENTRON 3VA1 and 3VA20–26 molded case circuit breakers (MCCBs). It is rated for a control voltage of 208–230 V AC at 50/60 Hz.

An undervoltage release is designed to respond when the control supply voltage falls below its specified operating threshold. Depending on the release characteristics and circuit breaker configuration, it can cause the associated breaker to trip or prevent the breaker from closing when the required control voltage is unavailable.

This Siemens accessory is suitable for procurement enquiries from electrical panel manufacturers, OEMs, industrial maintenance teams, system integrators, electrical contractors and replacement-parts buyers who require an undervoltage release for a compatible SENTRON circuit breaker.

Before ordering, verify the exact breaker model, control voltage, accessory mounting arrangement and manufacturer compatibility documentation to ensure the correct product is selected.

Technical Specifications

Applications and Industries

The Siemens 3VA9908-0BB25 undervoltage release is intended for specified compatible circuit breaker configurations in industrial and commercial electrical installations.

• Industrial power distribution panels
• Electrical switchboards and compatible MCCB assemblies
• OEM control panels and machine electrical systems
• Manufacturing plants and industrial facilities
• Commercial building electrical distribution systems
• Electrical panel maintenance and spare-parts procurement
• Control systems requiring undervoltage-responsive breaker operation
• Electrical contractor and system integrator projects

Benefits of Siemens Undervoltage Release

Compatibility and Installation Checks

Before purchasing the Siemens 3VA9908-0BB25, check the following details:

• Confirm the exact Siemens SENTRON 3VA circuit breaker model.
• Verify compatibility with the specified 3VA1 or 3VA20–26 breaker series.
• Match the required 208–230 V AC control voltage and 50/60 Hz frequency.
• Check the accessory mounting position and connection requirements against Siemens documentation.
• Confirm the release function and operating characteristics required for the installation.

Installation and electrical connections should be performed by qualified personnel in accordance with the manufacturer's instructions and applicable electrical safety requirements.

Why Buy Siemens Accessories from SB Smart?

SB Smart – S.B. Syscon Pvt. Ltd. supplies industrial electrical, automation and control products to panel builders, OEMs, contractors, maintenance teams and industrial customers across India.

• Product sourcing support for industrial electrical requirements
• Assistance with part number and compatibility checks
• Support for bulk, project and replacement enquiries
• Product pricing and availability enquiries
• Delivery enquiries across India, subject to availability and PIN-code serviceability
• Support for customers in Faridabad, Delhi NCR and other Indian industrial markets

Frequently Asked Questions (FAQs)

1. What is Siemens 3VA9908-0BB25?

It is an undervoltage release accessory rated for 208–230 V AC, 50/60 Hz, for specified compatible Siemens SENTRON 3VA1 and 3VA20–26 circuit breakers.

2. What is the rated voltage of this undervoltage release?

The specified control voltage is 208–230 V AC at a frequency of 50/60 Hz.

3. What does an undervoltage release do?

It responds when the control supply voltage falls below its specified operating threshold. Depending on the release design, it can trip the associated circuit breaker or prevent closing while the required voltage is unavailable.

4. Which circuit breakers are compatible with this accessory?

It is specified for Siemens SENTRON 3VA1 and 3VA20–26 series breakers. Verify the exact breaker model and accessory configuration before ordering.

5. Can this accessory be used with a 380–400 V AC supply?

This version is specified for 208–230 V AC. Do not substitute a 380–400 V AC supply without verifying the accessory rating and official Siemens documentation.

6. Does the undervoltage release provide overload protection?

The undervoltage release responds to control voltage conditions. Overload and short-circuit protection are functions of the compatible circuit breaker and its protection system.

7. What should I check before purchasing?

Check the complete order number, breaker model, control voltage, frequency and accessory mounting requirements.

8. Can I request a quotation from SB Smart?

Yes. Contact SB Smart with the required quantity, part number and delivery PIN code to request pricing and availability confirmation.

9. Does SB Smart accept delivery enquiries across India?

Yes. SB Smart accepts enquiries from customers across India, subject to product availability, shipping arrangements and PIN-code serviceability.

10. Who should install this accessory?

Installation should be carried out by qualified electrical personnel following the manufacturer's instructions and applicable electrical safety requirements.

Explore More Siemens Products

Browse industrial electrical products and accessories through the SB Smart Siemens product range.

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Siemens and SENTRON are trademarks of their respective owner. SB Smart is an independent supplier. Product specifications, compatibility, availability and delivery should be confirmed before purchase. Refer to official Siemens documentation for detailed technical information.